What are reasons A,B and C in the proof
1 answer:
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<u>Answer:</u>
x = 21.7°
<u>Step-by-step explanation:</u>
We know that the sum of the three angles in triangle add up to a total of 180°.
So adding the given expressions of angles and putting them equal to 180 to find the value of x:
Therefore, the value of x in a triangle with angles 3x-5, 2x+20, 4x-30 is equal to 21.7°.